| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of synthesizing the fine powder of metallic boride or the fine powder of metallic boride and other compounds by which compound compositions and the mixing ratio of each compound can easily be controlled, and crystallinity and a grain size distribution can be controlled as well without using gaseous hydrogen which has extremely high combustibility by using thermal plasma. <P>SOLUTION: Metal powder and/or the boride powder of the metal, and boron powder are fed into thermal plasma 1 of an inert gas such as gaseous argon, and the fine powder of metallic boride in a nanoorder is synthesized. By mixing the inert gas with gaseous nitrogen, gaseous oxygen or an organic carbon based gas, mixed fine powder of, the metallic boride fine powder with the fine powder of the nitride, oxide or carbide of the metal can be synthesized. <P>COPYRIGHT: (C)2003,JPO |
